Hong Kong Housing Authority
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Hong Kong Housing Authority Proposed Public Housing Development Sites 1 & 2 in Sheung Shui Areas 4 and 30 Traffic Impact Assessment Final Revision 1 | March 2021 This report takes into account the particular instructions and requirements of our client. It is not intended for and should not be relied upon by any third party and no responsibility is undertaken to any third party. Job number 236072-09 Ove Arup & Partners Hong Kong Ltd Level 5 Festival Walk 80 Tat Chee Avenue Kowloon Tong Kowloon Hong Kong www.arup.com Hong Kong Housing Authority Proposed Public Housing Development Sites 1 & 2 in Sheung Shui Areas 4 and 30 Traffic Impact Assessment Contents Page 1 INTRODUCTION 1 1.1 Background 1 1.2 Comparison of Development Plan of the Sites 1 1.3 Study Tasks 3 1.4 Structure of the Report 4 2 EXISTING TRAFFIC CONDITIONS 5 2.1 Locality and Access to the Site 5 2.2 Existing Road Network 5 2.3 Existing Traffic Condition 6 2.4 Public Transport Facilities 8 3 THE PROPOSED HOUSING DEVELOPMENT 12 3.1 Site Description 12 3.2 Development Schedule 12 3.3 Car Parking and Loading / Unloading Provision 13 3.4 Access Arrangement / Pedestrian Facilities 13 3.5 Re-provision of Private Car Parking Space 15 4 FUTURE TRAFFIC CONDITIONS 16 4.1 Assessment Scenarios 16 4.2 Forecasting Methodology 16 4.3 Junction Capacity Assessment 24 4.4 Proposed Junction Improvement Schemes 27 4.5 Proposed Improvement Scheme at Po Shek Wu Road 30 4.6 Other Improvement Schemes to Existing Interchanges 32 5 SENSITIVITY TEST 36 5.1 Sensitivity Test for Proposed Public Transport Interchange at Site 1 36 5.2 Sensitivity Test on the Programme Slippage of Major Improvement Works 37 6 PEDESTRIAN TRAFFIC IMAPCT ASSESSMENT 38 6.1 Existing Pedestrian Conditions 38 6.2 Pedestrian Demand Forecasting 41 6.3 Future Pedestrian Condition 45 7 PRELIMINARY PROPOSAL OF PUBLIC TRANSPORT FACILITIES 48 7.1 Proposed Public Transport Facilities for Site 1 48 236072-09 | Revision 14 | March 2021 \\HKGNTS69\TRAFFIC_GROUP\DOCUMENT\236000\236072-09 INSTRUCTION NO. A19, TRAFFIC IMPACT ASSESSMENT FOR SITES 1 & 2 AT FANLING SHEUNG SHUI AREA 30\09 REPORTS\TIA\FORMAL\14TH FORMAL (02102020)\FR_REV13C.DOCX Hong Kong Housing Authority Proposed Public Housing Development Sites 1 & 2 in Sheung Shui Areas 4 and 30 Traffic Impact Assessment 7.2 Proposed Public Transport Facilities for Site 2 49 7.3 Review of Impact on East Rail Line 50 8 SUMMARY AND CONCLUSION 51 8.1 Summary 51 8.2 Conclusion 52 Figures Figure 1 Subject Site and Assessed Junctions and Links Locations Figure 2 Accessibility to/ from the Proposed Development Figure 3 Year 2017 Traffic Flows Figure 4 Public Transport Facilities in the Vicinity of Subject Site Figure 5 Year 2030 Reference Traffic Flows Figure 6 Year 2030 Design Traffic Flows Figure 7 Year 2033 Reference Traffic Flows Figure 8 Year 2033 Design Traffic Flows Figure 9 Proposed Improvement Scheme at Po Shek Wu Road Southbound Figure 10 Example of Public Transport Routing Before and After Public Transport Redistribution Figure 11 Location Plan for Assessed Pedestrian Facilities Figure 12 Pedestrian Routings to/from the Proposed Development Figure 13 Proposed Public Transport Facilities Figure 14 Overview of Proposed Footbridge Network Appendices Appendix A Planned/ Committed Junction Improvement Schemes by Other Projects Appendix B Proposed Junction Improvement Schemes 236072-09 | Revision 14 | March 2021 \\HKGNTS69\TRAFFIC_GROUP\DOCUMENT\236000\236072-09 INSTRUCTION NO. A19, TRAFFIC IMPACT ASSESSMENT FOR SITES 1 & 2 AT FANLING SHEUNG SHUI AREA 30\09 REPORTS\TIA\FORMAL\14TH FORMAL (02102020)\FR_REV13C.DOCX Hong Kong Housing Authority Proposed Public Housing Development Sites 1 & 2 in Sheung Shui Areas 4 and 30 Traffic Impact Assessment 1 INTRODUCTION 1.1 Background 1.1.1 Further to the Final TIA Report submitted via Hong Kong Housing Authority (HKHA) memo dated 15 October 2018 and Transport Department’s acceptance memo on 2 November 2018, Arup was appointed by HKHA to update the TIA report to reflect the latest updates on the facilities and population intake years provided of the proposed public housing development at Sites 1 and 2 in Sheung Shui Areas 4 and 30 (the Sites). Sites 1 and 2 are public housing development at Choi Yuen Road and San Wan Road respectively. 1.1.2 Site 1 is bounded by Choi Fai Street on the north, Choi Yuen Road on the south and Po Shek Wu Road on the east. It is zoned “Industrial” (“I”) and currently an existing public car park under Short Term Tenancy (STT). The proposed public housing development will comprise of about 2,088 flats and is envisaged to be completed by Year 2025/26 for Phase 1 (2 residential blocks), Year 2027 for a new public transport interchange and Year 2029/30 for Phase 2 (1 residential block). The site location and its environs in the vicinity are shown in Figure 1. 1.1.3 Site 2 is bounded by Ka Fu Close on the north, San Wan Road on the south and Po Shek Wu Road on the east. It is zoned “I” and “Other Specified Uses” annotated (Bus Depot) (“OU (Bus Depot)”) and partly as an existing public car park under STT and partly as WSD’s depot under TGLA. The proposed public housing development will comprise of about 1,556 flats (3 residential blocks) and is envisaged to be completed by Year 2025/26. The site location and its environs in the vicinity are shown in Figure 1. 1.1.4 This TIA study is to examine the impacts of the traffic generated by the proposed public housing development at the Sites on the existing and planned road networks, particularly with respect to the performances of the affected junctions in the vicinity; and present the findings and results of analyses of the other traffic and transport issues related to the proposed public housing developments. Any deficiency would be identified and improvement proposals would be recommended if necessary to resolve any foreseeable problem. 1.2 Comparison of Development Plan of the Sites 1.2.1 According to the latest development plan provided by HKHA, the development parameter and population in take year of the proposed public housing development in the Sites has been updated. Table 1.1 below compares the development schedule (i.e. those adopted in the accepted TIA as abovementioned in para 1.1.1, and the latest development plan) of the proposed public housing developments in the Sites. 236072-09 | Revision 14 | March 2021 Page 1 \\HKGNTS69\TRAFFIC_GROUP\DOCUMENT\236000\236072-09 INSTRUCTION NO. A19, TRAFFIC IMPACT ASSESSMENT FOR SITES 1 & 2 AT FANLING SHEUNG SHUI AREA 30\09 REPORTS\TIA\FORMAL\14TH FORMAL (02102020)\FR_REV13C.DOCX Hong Kong Housing Authority Proposed Public Housing Development Sites 1 & 2 in Sheung Shui Areas 4 and 30 Traffic Impact Assessment Table 1.1: Comparison of Development Schedule of the Sites Parameters Parameters (adopted in the accepted TIA dated 15 (latest development plan adopted in this Development October 2018) TIA) Site 1 Site 2 Site 1 Site 2 2,040 flats 1,480 flats 2,088 flats 1,556 flats Public Housing (For Assessment: (For Assessment: (For Assessment: (For Assessment: 2,244 flats)* 1,628 flats)* 2,297 flats)* 1,712 flats)* Retail 400 sqm GFA 700 sqm GFA 395 sqm GFA 700 sqm GFA Post Office N/A 560 sqm GFA N/A N/A Welfare 8,710 sqm GFA N/A 10,513 sqm GFA N/A Facilities Kindergarten 6 classrooms N/A 6 classrooms N/A Full Population 2024/25 2027/28 2029/30 2025/26 Intake Year Notes: *With additional 10% allowance for the proposed number of flats for assessment purpose. 1.2.2 Based on the information in Table 1.1, a summary of the trips related to the proposed public housing developments, comparing those adopted in this TIA and the the accepted TIA dated 15 October 2018, is shown in Table 1.2 below. 1.2.3 In view thereof, the change of development parameter in the latest development plan will only generate minimal additional traffic, i.e. 2- way 6pcu/hr for AM and PM peak hours respectively, and it is anticipated that the change of development parameter should not further deteriorate the traffic condition. The corresponding assessment based on the latest development parameter will be detailed in the succeeding sections. 236072-09 | Revision 14 | March 2021 Page 2 \\HKGNTS69\TRAFFIC_GROUP\DOCUMENT\236000\236072-09 INSTRUCTION NO. A19, TRAFFIC IMPACT ASSESSMENT FOR SITES 1 & 2 AT FANLING SHEUNG SHUI AREA 30\09 REPORTS\TIA\FORMAL\14TH FORMAL (02102020)\FR_REV13C.DOCX Hong Kong Housing Authority Proposed Public Housing Development Sites 1 & 2 in Sheung Shui Areas 4 and 30 Traffic Impact Assessment Table 1.2: Comparison of Estimated Generated and Attracted Traffic for the Sites (PCUs / hr) AM Peak PM Peak Development Generation Attraction Generation Attraction Adopted in the accepted TIA dated 15 October 2018 Public Housing Development at Site 1 Public Housing 55 51 40 46 (Assessment Purpose: 2,244 flats) Retail (400 m2 GFA) 1 1 2 2 Kindergarten (6 classrooms) and Welfare 30 30 30 30 facilities (8,710 m2 GFA) Total of Site 1 86 82 72 78 Public Housing Development at Site 2 Public Housing 40 37 29 33 (Assessment Purpose: 1,628 flats) Retail (700 m2 GFA) 2 2 3 3 no additional traffic generated / attracted are expected Public Car Park in view of the existing car park within the site traffic generated / attracted are expected to fall outside Post Office (560 m2 GFA) the peak hours and would be minimal during the peak hours Total of Site 2 42 39 32 36 Total (Site 1+ Site 2), (A) 128 121 104 114 Latest development plan adopted in this TIA Public Housing Development at Site 1 Public Housing 56 52 41 47 (Assessment Purpose: 2,297 flats) Retail (395 m2 GFA) 1